The Serafina is a triple-layered mattress with an 8" polyurethane support core. The middle layer is 3" of FlexTechCustomWave foam, and the 3" top layer is gel memory foam. The support core with a density of 2 lbs. supports and stabilizes the mattress. The 5-lb. FlexTech is to increase the flow of air while feeling responsive. The gel-infused memory foam has a density of 3-lb. Being memory foam, it conforms and cradles as the gel cools the sleeping surface. The comfort level of the Novaform Serafina is not specified, but from the layers listed it appears to be Medium to Medium Plush.

The cover is quilted. The fabric is not specified, but for six of the Novaform models is listed as matelassť.

As with the other Costco Novaform mattresses, the 14" Serafina has a 20-year warranty. The foundation is sold separately, and the mattress is compressed and packaged for shipping and delivery.